Combined straw and coal or wood burning engine



(No Model.) 2 sheets-$11M 1".

M; RUMELY. COMBINED- STRAW AND GOAL 0R WOOD-BURNING ENGINE. No. 297,170. Patented Apr. 22.11884.

(-No Model.) 7 2 SheetsSheet 2.

M. RUMELY. COMBINED STRAW AND GOAL 0R WOOD BURNING ENGINE.

No. 297,170. 1 Patented Apr. 22, 1884 Un'rrnn rates Parent @rrrca MEINRAD RUMELY, OF LA FORTE, INDIANA.

COMBINED STRAW AND COAL OR WOOD BURNING ENGINE.

SPECIFICATION forming part of Letters Patent No. 297,170, dated April 22, 1884.

Application filed June 16;'1SS3.

fo aZZ whom it may concern:

Be it known that I, MEINRAD RUMELY, a citizen of the United States, residing in La Porte, in the county of La Porte and State of Indiana, have invented a new and useful Improvement in Combined Straw and Goal or \Vood Burning Engines, of which the following is a specification.

In portable or traction steam-engines used for operating thrashingmachines it is desirable in many localities to burn the straw for fuel in the engine as it comes from the thrashingmachine; but while the traction-engine is upon the road or being moved from farm to farm it is of course impracticable to use straw for fuel, and wood or coal must be burned, and some farmers will desire their straw burned, while others will not. Though it is frequently therefore desirable to do so, coal and straw cannot,

however, both be economically burned in thesame engine or in the same combination of grates and lines, owing to the very different natures of the two fuels.

The object of thepresent invention is to provide a practical combined straw and wood or coal burning engine suitable for use in steamthrashers; and my invention consists in combining, with a suitable coal or wood burning grate and its fines, a straw-burning grate at the opposite end of the boiler, and having its main flue connecting through the coal-grate with its main flue. V

The invention also consists in making the fire-box of boiler-plate iron and surrounding it on all sides with water-compartments, so

that the fire-box is completely surrounded with water on all sides-top,front,bottom,and sides. In this way both water and steam room are gained, and the heating-surface of the fire-box is materially increased, and a considerable saving in fuel and labor of firing is consequently effected also. This construction ofthe fire-box likewise does away with the ash-pan and the danger of the front warping and cracking from the heat.

The invention also consists in the novel construction, combinations, and arrangement of devices, as herein shown or described.

In the accompanying drawings, which form a part of this specification, and in which similar letters of reference indicate like parts, Figure 1 is a central longitudinal section of a (No model.)

steam-boiler embodying my invention, and

Figs. 2 and 3 are crosssections on lines 2 2 and 3 3, respectively, of Fig. 1.

In the drawings, A represents the boiler, B the dome, and O the smoke-stack.

D is the coal or wood burning grate, and E is the straw-burning grate, arranged below the former and at the opposite end of the boiler.

H is the main flue from the coal or wood burning grate, and h h are the return-fines leading to the smokestack.

The firebox F is surrounded with \VZti3l-C01l1- partments a a on all sides.

G is the door through which the fuel (wood or coal) is fed.

H is the main flue, leading from the strawburning grate and connecting through the coalburning grate and fire-box with the main flue H, and thence through the return-fines h with the smoke-stack.

I is the doorthrough which the straw is supplied to the fire-box J. hvatencompartments connecting with the boiler through openings Z) Z) surround the flue H and fire-box J on its sides. The extremity of the straw-flue H constitutes by this arrangement the ash pan or pit for the coal or wood burning grate.

K is the door for cleaning out the ashes.

L is the ash-pan for the straw-burning grate, and Z is the door thereof for cleaning out the ashes and regulating the draft.

. By combining with the 'coaLburning grate and fire-box a straw-burning grate and firebox arranged in this way beneath the former and at the opposite end of the boiler, and surrounding the whole with water-compartments, the extent of the heating-surface is very much increased for the straw-burning grate, as well as the length of the fines, and a very effective engine or boiler is produced for burning straw, while its compactness and simplicity is such that its size and weight is little, if any, in creased over that of an ordinary coal or wood burning engine, the coal-ash pan being diskind of fuel may be burned without making any change in or removal of parts of the apparatus, it being ready and adapted to burn either coal or straw, the only difference being that one is fed in at one end and the other at the opposite end. Goal, straw, or wood can, however, be successfully used at either end of boiler and lire-box and can be fed at either fire-box, if desired.

What I claim is- 1. The combination, with a steam-boiler, of a coal or wood burning grate, fire-box, and fines, and a strawburning grate and lire-box arranged beneath the former and at the opposite end of the boiler, and having a main line connecting through the coal or wood burning grate and firebox with their fines, said fireboXes and main flue being lined with waterconipartnients connecting with the boiler, substantially as specified.

2. In a combined straw and coal or wood burning engine, the combination of the boiler with a coal or wood burning grate, D, fire-box F, and ilucs H and 71', said lire-box F being arranged at one end ofthe boiler and surrounded with watcr-compartments a a a, connected with the boiler, a straw-burning grate, E, and fire-box J, arranged beneath said coal-grate D and at the opposite end of the boiler, and having a main flue, H, connecting through said grate D and fire-box F with main-flue H, said lire-box J being lined on its sides with water"compartments, and fine H being sur rounded with water-coxnpartnients a, connectedv with the boiler, substantially as specified.

MEINRAD RUMELY.

Witnesses:

ADoLrH lllAYER, JOHN I'IANNA. 

